diff --git a/test/iso.c b/test/iso.c
index d20c631..afa9cf2 100644
--- a/test/iso.c
+++ b/test/iso.c
@@ -75,12 +75,12 @@ int main(int argc, char **argv)
 	}
 
 	if (argc < 2) {
-		printf ("must pass directory to build iso from\n");
+		printf ("Please pass directory from which to build ISO\n");
 		usage();
 		return 1;
 	}
 	if (argc < 3) {
-		printf ("must supply output file\n");
+		printf ("Please supply output file\n");
 		usage();
 		return 1;
 	}